The warmth from the water is flowing to the ice and melting it and The warmth from the burner is flowing to the cold water and increasing its temperature.
What is the flow of heat called?Convection, which is essentially the mass transfer of heat, is the process by which heat is moved from one place to another by the movement of fluids. The transport of heat into the atmosphere involves one of three processes: radiation, conduction, or convection.
What happens during heat flow?Heat flow occurs when a hot object transmits its heat through a conductors to a cooler, similar to how high-energy objects impart their power to low-energy objects. How well a conductor transfers heat will impact how quickly and how much heat is transported.
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Which is an outer planet in our solar system?
A.Earth
B.Jupiter
C.Mars
D.Venus
Question:
Which is an outer planet in our solar system?
Answer:
B. Jupiter
Answer: Jupiter
Explanation: As its situated outside the asteroid belt
a mass m at the end of a massless rod of length l swings as a pendulum with two horizontal springs for negligible mass and spring constants k1 and k2 acting on it. both springs are relaxed when the rod is vertical. what is the period of small oscillations? [from feynman exercises in physics]
The answer is T = 2π/ω
Further complete solution is in png format.
Dear People Please Answer this questions
(1) When we whirl a stone round, What type of motion is executed ?
(2) Is the direction of the ball is same at every point?
(3)What are the factors that affect the change in direction?
(4)What causes for those changes?
please please please help me or I will get suspended !!!!!
I want expert to answer
1)
Circular Motion
2)
No; the direction changes.
3)
Velocity. Gravitational Pull. Force/Twist. Acceleration.
4)
The weight of the object, gravity pulling on it. The kinetic energy produced by you which caused acceleration in a certain vector direction. Location of the object.
The first step in the proton-proton chain produces an antielectron, or positron. What happens to the positron?.
In the first step in the proton-proton chain, the positron gets rapidly converted to energy when it meets a standard electron, leading to matter-antimatter annihilation.
The positron is an antiparticle or antimatter counterpart of the electron. It persists an electrical charge of +1e, a spin of 1/2, and a mass identical to the mass of the electron. When a positron collides with an electron, destruction occurs. If this collision is at low energies, it leads to the production of two or more photons. They're created by radioactive decay or by the pairing of two protons at high energies.
The proton-proton chain is a nuclear fusion. The proton-proton fusion is initiated only when the kinetic energy of the proton is high enough to undergo the electrostatic repulsion.
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One force that acts on a surfer is friction. Another is gravity. Which of these is a non-contact force?
Answer: gravity
Explanation:
Friction requires 2 surfaces in contact with each other. Gravity is a non-contact, universal force.
which statements are true, concerning jupiter as compared to the other planets in our solar system? (may be more than one correct answer)
Out of all the planets, Jupiter has the most mass. Of all the planets, Jupiter has the strongest magnetic field. Of all the planets, Jupiter rotates the most quickly.
Jupiter rotates most quickly where?With a rotational velocity of 28,273 miles per hour (or 43,000 kilometers per hour), Jupiter's equator rotates a little more quickly than its polar regions. Jupiter's day ranges from 9 hours, 56 minutes near the poles to 9 hours, 50 minutes towards the equator. As the largest planet, Jupiter has the gravitational ability to draw in the most mass as it travels through space, making it the planet with the quickest rotation. Jupiter acquires the angular momentum of whatever mass it comes into contact with, including gas, dust, and rock, in addition to the mass itself. One rotation of Jupiter, for instance, takes 9 hours and 55 minutes, although it rotates at a speed that is 27 times quicker than Earth's at its equator.
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7) Your Grandma is following behind you on the trip to Dallas, but she refuses to drive
faster than 60 miles per hour. If she drives at that speed for the entire trip, how much
later will she arrive in Dallas
Answer:
Grandma will arive [tex]\frac{1}{2}[/tex]hr later
Explanation:
[tex]s=20\\d=210 mi|\\ s=70 mi|h \\ \\ \frac{60}{1} =\frac{210}{+} = 3.5 hrs[/tex]
A 1,286-kg car is skidding to a stop along a horizontal surface. The car decelerates from 26.9 m/s to rest in 9.36 seconds. How far did the car skid before coming to rest?
Answer:
Explanation:
Given:
M = 1 260 kg
V₀ = 26.9 m/s
V = 0 m/s
Δt = 9.36 s
___________
L - ?
1)
Vehicle acceleration:
a = (V - V₀) / Δt ) = (0 - 26.9) / 9.36 ≈ - 2.87 m/s²
2)
Braking distance of the car:
L = (V² - V₀²) / (2·a)
L = ( 0² - 26.9²) / (2·(-2.87)) ≈ 121 m
(a) how many minutes does it take a photon to travel from the sun to the earth? (b) what is the energy in ev of a photon with a wavelength of 558 nm? (c) what is color of light with this wavelength? (d) what is wavelength of a photon with an energy of 1.00 ev? please show the solution.
To known about all the answers, we first known about the photon and wavelength concept.
What is a photon?
A tiny energy packet of electromagnetic radiation is called a photon, referred to as a light quantum. Albert Einstein proposed the existence of discrete energy packets during the transmission of light in his 1905 description of the photoelectric effect, which gave rise to the photon concept.
What is wavelength?
A waveform signal's wavelength is the separation between two identical points (adjacent crests) in adjacent cycles as the signal travels through space or along a wire. This length in wireless systems is typically specified in meters (m), centimeters (cm), or millimeters (mm).
a) Distance between the earth and the sun is
1.5*10^N
Speed of photon = 3*10^8m|s
Time= distance/speed
= 1.5*10^11m/3*10^8m|s
= 0.5*10^3 second
= 500 sec
= 8.3 minutes.
b) energy of the photon is given by
E=hc/⋋
h= planks constant – 4.14* 10^15 eVs
c= Speed of light- 3*10^8 m/s
⋋= 558 nm= 558* 10^9 m
E= 4.14* 10^15 eVs* 3*10^8 m/s /558* 10^9 m
E= 2.23 eV
c) Wavelength color
495–570 nm for green. 570–590 nm for yellow. Orange (590–620 nm). Red: 620-750 nm
d) Let the wavelength be ⋋
We know E=hc/⋋
1 eV= 4.14*10^-15 eVs* 3*10^8m/s/⋋
⋋ = 12.42*10^-7m
⋋ = 1242 nm.
Therefore, Distance between the earth and the sun is 8.3 minutes. Energy of the photon is given by 2.23 eV. Wavelength color is green or yellow. The wavelength be ⋋ is 1242 nm.
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cords of connective tissue that connect MUSCLES TO BONES
Answer:
Tendon
Explanation:
Tendons are a type of connective tissue that attach muscle to bone. Hope this helps! :)
Help!!! 23 points label these as Element, compound, mixture of elements, and mixture of compounds
The given images are labelled as either element, compound, mixture of elements or mixture of compounds accordingly.
The answers are marked according in order of the images as follows:
ElementsCompoundsMixture of elementsMixture of compoundsCompoundsCompoundsIf there are only single type of atoms present without being in contact with another atom, it is called as elements. If one atom is in contact with another atoms it is a compound. If there are more than one type of element, it is a mixture of elements. If there are more than one type of compound, it is a mixture of compounds.
Therefore, the given images are labelled as either element, compound, mixture of elements or mixture of compounds accordingly.
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in a solar system far, far away the sun's intensity is 200 w/m2 for an inner planet located a distance r away. what is the sun's intensity for an outer planet located at a distance 6 r from the sun?
The sun's intensity for an outer planet located at a distance 6r from the sun is 5.55 W/m². The result is obtained by using the inverse square law formula.
What is the Inverse Square Law formula?The Inverse Square Law formula describes the intensity of light is inversely proportional to the square of the distance. It can be expressed as
[tex]\frac{I_{1} }{I_{2} } = \frac{d_{2}^{2} }{d_{1}^{2}}[/tex]
Where
I₁ = Intensity at distance 1 (W/m²)I₂ = Intensity at distance 2 (W/m²)d₁ = distance 1 from a light source (m)d₂ = distance 2 from a light source (m)Given the case the sun's intensity is 200 W/m² for an inner planet at the distance r. If an outer planet is at a distance 6r, what is the sun's intensity?
By using the inverse square law formula, the sun's intensity for an outer planet is
[tex]\frac{I_{1} }{I_{2} } = \frac{d_{2}^{2} }{d_{1}^{2}}[/tex]
[tex]\frac{200 }{I_{2} } = \frac{(6r)^{2} }{r^{2}}[/tex]
[tex]\frac{200 }{I_{2} } = \frac{36r^{2} }{r^{2}}[/tex]
[tex]I_{2} = \frac{200} {36}[/tex]
I₂ = 5.55 W/m²
Hence, the sun's intensity for a planet at a distance 6r from the sun is 5.55 W/m².
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An object i aid to be poitively charged if it number of electron i greater than the number of proton
An object I aid to be positively charged if it has a number of electrons i greater than the number of protons. TRUE
If an object has extra protons than electrons, then the internet fee on the item is fantastic. If there are extra electrons than protons, then the net charge at the item is bad. If there are equal numbers of protons and electrons, then the object is electrically impartial.
An electrical price is created while electrons are transferred to or removed from an object. because electrons have a bad charge, while they are added to an item, it turns negatively charged. when electrons are removed from an object, it will become undoubtedly charged.
A positively charged object has misplaced electrons. A definitely charged object has won protons. A negatively charged item has lost protons. If the variety of electrons is greater than the range of protons, the particle is a negative ion, also referred to as an anion.
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Disclaimer:- your question is incomplete, please see below for the complete question.
An object I aid to be positively charged if it has a number of electrons i greater than the number of a proton. TRUE/FALSE
a crane lowers a metal beam into place at constant speed. which is true about the work done by the gravitational force (wg) and the work done by the tension in the cable (wt) as the beam is lowered? a) wg>0 and wt>0 b) wg>0 and wt<0 c) wg<0 and wt>0 d) wg<0 and wt<0 e) wg
The work done by gravitational force and tension in the cable is wg > 0 and wt <0. option 2 is correct.
The work done by the force is given as :
W = Fdcosθ
where
F= force
d = displacement
θ = angle between directions of F and d
when force and displacement are parallel then :
θ = 0
cosθ = ±1
so work done is positive
when force and displacement are anti-parallel then :
θ = 180°
cosθ = -1
so work done is negative.
then crane is moving downward. the force is also downward and tension is upward.
The work done by gravitational force and tension in the cable is wg > 0 and wt <0. option 2 is correct.
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What is the potential difference measured if the following voltmeter (refer to picture) is used and connected to the circuit via the 3V terminal?
The potential difference measured if the given voltmeter is used and connected to the circuit via the 3V terminal is 1.4 V.
The reading of voltmeter is taken for the row with 0, 1, 2 and 3 values. Each line indicates 0.1 volts. The distance between each smaller lines indicates 0.2 volts and the distance between each longer lines indicates 0.2 volts.
A voltmeter is a device used to measure the potential difference between two points in a circuit. Potential difference is also called as voltage. Its unit is volts.
V = IR
V = Voltage
I = Current
R = Resistance
Therefore, the potential difference measured is 1.4 V
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Which statement best shows that waves can carry energy?
Sounds can be recorded.
A rainbow shows a spectrum of colors.
You feel vibrations if loud sounds are played.
Light shining through some trees makes shadows.
The statement that best shows that waves can carry energy is option d: light shining through some trees makes shadows.
What is the most accurate way to define sound waves?A sound wave is the pattern of disruption brought on by the movement of energy moving through a medium as it propagates away from the source of the sound (such as air, water, or any other liquid or solid matter). Pressure waves are produced when an object vibrates, such as a ringing phone, and these waves are known as sound waves.
Therefore, note that the energy of a sound wave is transferred through particle contact. A vacuum cannot be traversed by a sound wave. Sound is now a mechanical wave as a result.
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how many high voltage cables supply electrical power to the hv components at the front of the vehicle?
Option B. Can be charged to full capacity by using a special dealer-only high-voltage charger.
Voltage is the strain from an electrical circuit's energy source that pushes charged electrons (modern-day) through and engages in the loop, allowing them to do paintings inclusive of illuminating light. In quick, voltage = strain, and it's far measured in volts (V).
Voltage, also called an electric-powered strain, electric-powered anxiety, or ability distinction is the difference in electric-powered capacity between two factors. In a static electric field, it corresponds to the work needed in step with a unit of charge to move a take a look at the rate among the 2 points.
Voltage, also called electromotive force, is absolutely electricity consistent with unit fee. In different phrases, voltage is the difference in electric-powered capacity among factors. contemporary is just the rate of drift of electrical fee.
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Disclaimer:- your question is incomplete, please see below for the complete question.
how many high-voltage cables supply electrical power to the hv components at the front of the vehicle?
A. Using the ICE to turn the motor/generator to fully charge the HV battery
B. Can be charged to full capacity by using a special dealer-only high-voltage charger
C. Operating the ICE at idle after returning from a trip
if the blocks are released from rest, which way does the 10 kgkg block slide, and what is its acceleration? enter a positive value if 10 kgkg block accelerates up the ramp, and a negative value otherwise.
The acceleration is -0.48m/s².
Explain what an acceleration is.Acceleration is the rate of change in both speed and direction of velocity over time. Anything is said to have been accelerated when it goes faster or slower in a straight line.
Suppose that θ=35°
First, you need to set up equations for both blocks.
Let m₁ be 10kg and m₂ be 5kg and for our computations suppose right is positive and up is positive
For m₁ the solution is:
Sigma Fx = ma
T - m₁gsin35 = m₁a
where T = tension
For m₂
m₂g - T = m₂a
Add the two equations together
m₁a + m₂a = T-m₁gsin35 + m₂g - T
a(m₁ + m₂) = m₂g - m₁gsin35
a= (5×9.8 - 10×9.8×sin35)/(10 + 5)
a= -0.48m/s².
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A 100.0 g arrow is pulled back 30.0 cm against a bowstring. The bowstring's spring constant is
1250 N/m. What speed will the arrow have when it leaves the bowstring if the arrow is shot horizontally?
Velocity of the arrow while leaving the bow is 33.54 m/s.
What is kinetic energy?Kinetic energy is the energy that an object has when it is in motion. If you want to accelerate an object you have to apply a force. To add strength, we need our work. When the work is done, the energy is transferred to the object and it moves at a new constant speed.
Energy stored in the string = Kinetic energy of the arrow.
1/2(ke²) = 1/2(mv²)
Where k = spring constant of the bowstring
e = extension
m = mass of the arrow
v = velocity of the arrow.
Let's make v the subject of this equation
v = √(ke²/m)
Given: k = 1250 N/m
e = 30 cm or 0.3 m
m = 100 g or 0.1 kg
Substitute the values into the equation:
v = √(1250×0.30²/0.1)
v = √(1125)
v = 33.54 m/s
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Calculate the initial velocity of a ball thrown vertically into the air reaching a maximum
height of 20 m. (Don't forget: at maximum height the final velocity is zero and the
acceleration is -10 m/s²)
The initial velocity of the ball thrown vertically into the air reaching a maximum height is 20 m/s.
What is velocity?
Velocity can be defined as the ratio of displacement to time.
To calculate the initial velocity of the ball, we use the formula below.
Formula:
v² = u²+2gh............... Equation 1Where:
v = Final velocityu = Initial velocityg = Acceleration due to gravityh = HeightFrom the question,
Given:
v = 0 m/sg = -10 m/s²h = 20 mSubstitute these values into equation 1
0² = u²+[2×20×(-10)]-u² = -400u² = 400u = √400u = 20 m/sHence, the initial velocity of the ball is 20 m/s.
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the salad is chemichal or physical change
Answer:Physical
Explanation:
Answer:
physical change
Explanation:
Making a fruit salad, with raw fruits is considered as physical change because in this process chemical composition of fruits is not changed. It is simply changing the shape of the substance.
Evidence card 2: Repelling magnets it was harder to push the magnets together as they got closer together.
What affects the amount of potential energy stored in the magnetic field when a magnet is moved against a magnetic force?
The thing that affects the amount of potential energy stored in the magnetic field when a magnet is moved against a magnetic force is by the strength of the magnet as well as the distance that another magnet or magnetic object is said to be from it.
What aspects of magnetic potential energy affect it?Potential energy between two magnets will depend on their orientation as well as their proximity to one another and their distance from one another. If the opposing poles are kept apart, the potential energy will increase with increasing distance and decrease with increasing proximity.
More energy is transferred to the magnetic field when an object is moved against a stronger magnetic force. Near magnets, magnetic forces are stronger.
Therefore, The power of the magnet and the separation from other magnets or magnetic objects have an impact on how much potential energy is held in the magnetic field.
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A block of mass m1 = 14.4 kg is on a frictionless table to the left of a second block of mass m2 = 20.2 kg, attached by a horizontal string (see the figure below).
(a) If a horizontal force of 1.53 ✕ 102 N is exerted on the block m2 in the positive x-direction, use the system approach to find the acceleration (in m/s2) of the two blocks.
(b) What is the tension (in N) in the string connecting the blocks?
(a) The acceleration (in m/s²) of the two blocks is 4.42 m/s².
(b) The tension (in N) in the string connecting the blocks is 63.65 N.
What is the acceleration of the blocks?
The acceleration of the blocks is determined by applying Newton's second law of motion as shown below.
F(net) = ma
where;
F(net) is the net force on the blocksm is the mass of the blocksa is the acceleration of the blocksF = m₁a + m₂a
F = a(m₁ + m₂)
a = F/(m₁ + m₂)
where;
a is the common acceleration of the blocksm₁ is the mass of the first block = 14.4 kgm₂ is the mass of the second block = 20.2 kgF is the applied force on the blocks = 153 Na = (153) / (14.4 + 20.2)
a = 4.42 m/s²
The tension (in N) in the string connecting the blocks is calculated as follows;
T = m₁a
T = 14.4 x 4.42
T = 63.65 N
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if each resistor is rated at 0.2 w (maximum without overheating), what is the maximum voltage that can be applied across the whole network?
The maximum voltage that can be applied to the whole network is 39.46V.
What is the relationship between power and voltage?The explanations given here are that Power equals current times Voltage (P=VxI), Voltage equals Power divided by current (V=P/I), and current equals Power divided by Voltage (I=P/V).
Power and Voltage:
The equation for the relationship between power, resistance, and voltage is
P = V²/R
P is for power,
R stands for resistance,
and V for voltage.
Given that the resistors
V = [tex]\sqrt{PR}[/tex]
Consequently, the maximum voltage for the 2.8k resistor will be:
V = [tex]\sqrt{(0.2)(2800)}[/tex]
V = 23.66V
The maximum voltage for the 2.1k resistor will be similar:
V = [tex]\sqrt{(0.2)(2100)}[/tex]
V = 20.49V
This is lower than the 2.8k resistor's maximum voltage.
The voltage between the 2.8k and 2.1k resistors must be same because they are connected in parallel.
The highest voltage that can be applied across this parallel configuration is 20.49V since a voltage of 23.66V would be too high for the 2.1k resistor to handle.
Similarly, the voltage drop across the series-connected 1.8 k resistor is:
V = [tex]\sqrt{PR}[/tex]
V = [tex]\sqrt{(0.2)(1800)}[/tex]
V = 18.97V
Consequently, the highest voltage that can be used over the entire network is
20.49V + 18.97V = 39.46V
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Major activity injuries include
Bone breaks
Concussions
Joint Dislocations
All of the above
Explanation:
Major activity injuries include:
Bone breaksConcussionsJoint DislocationsAll of the aboveAnsver:
All of the above
true or false: if an elevated feature near the heel or flanks or a position upwind of the fire affords a good sight line, take advantage of it as long as there is zero possibility that the fire will go there.
An elevated feature near the heel or flanks or a position upwind of the fire affords a good sight line and there is advantage of it as long as there is zero possibility that the fire will go there, which is true statement.
Elevated feature helps to protect the space besides there is a fire present. Elevated feature is the safest and nearest place to not get effected by the fire present in the other side of the elevated feature.
This feature is also created in case of emergency situations to immediately reduce the effect of the fire. This could a technique to reduce the effect of the hazards in the disaster management.
While considering the effect of hazards reduction, there are parameters on which these depends, are shape of elevated feature, elevation of the elevated feature and steepness of the elevated feature.
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5. The acceleration of gravity at Hartford, Connecticut, is 9. 80336 m/s².
What is the gravitational force acting on a. 25000 kg mass at this
location?
The gravitational force acting on 25000 kg mass at a given location is 2.45 × 10⁵ N.
What is gravity?Gravity can be described as an attractive force on a body towards the center of the earth. Every object having mass applies some force or gravitational pull on another object having mass. Gravity is responsible for the planets in orbit around the sun.
Given, the mass of the object, m = 25000 Kg
The acceleration of gravity at Hartford, Connecticut, g =9.80336 m/s²
The gravitational force acting on the given mass at this location is given by:
F = mg
F = 25000 Kg × 9.80336 m/s²
F = 245084 N
F = 2.45 × 10⁵ N
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a 1571-kg submarine rises straight up toward the surface. seawater exerts both an upward buoyant force of 14,848 n on the submarine and a downward resistive force of 947 n. what is the submarine's acceleration?
the submarine's acceleration is 0.95 m/sec²
Total force on submarine = 14848 - (1571 * 9.8 + 947)
= -1494.8 N
=> submarine's acceleration = F/m
= 1494.8/1571
= 0.95 m/sec²
acceleration is the rate of change in both speed and direction of velocity over time. When something moves faster or slower in a straight line, it is said to have been accelerated. Because the direction is constantly shifting, motion on a circle accelerates even when the speed is constant. Both effects add to the acceleration for all other types of motion.
It is a vector quantity because acceleration has both a magnitude and a direction. Another vector quantity is velocity. The velocity vector change over a given period of time, divided by that period of time, is the definition of acceleration. The upper limit of the ratio of velocity change provides instantaneous acceleration (at a specific time and place).
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A 0.90-kg block initially at rest on a frictionless, horizontal surface is acted upon by a force of 3.0 n for a distance of 3.0 m. how much farther would the force have to act for the block to have 56 j of kinetic energy?
The force would have to work on the block till a distance of 15.66m farther to have 56 joules of kinetic energy.
The work done is given by the product of the force applied and the distance covered along the direction of force.
So we can write,
W = F.s
Where w is the work done if is the force and S is the distance covered.
According to work energy theorem, the work done is equal to the change in kinetic energy.
The force applied in this case is 3 Newton and the body has no till a distance of 3m. Let us assume that the block is moved till a distance x in order to achieve a kinetic energy of 56 joules.
So, it can be written,
3(3+x) = 56
Solving,
9+3x = 56
3x = 47
x = 15.66 m.
So, it is required to move the body by a distance of 15.66 m.
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you pull a box with a constant force of 250 n. the box moves 10 m along a straight path on a rough surface at a constant speed. how much thermal energy is generated in the system of the box and the rough surface?
The thermal energy of the box which is pulled with a force of 250 N to a distance of 10 meters is 2500 J
The force to pull the box = 250 N
The box is moved to a distance of 10 meters
The thermal energy can be found using the formula,
W = F x d
where W is the thermal energy
F is the Force
d is the distance moved
Let us substitute the known values in the above equation, we get
W = 250 x 10
= 2500 J
Therefore, the thermal energy of the box is 2500 J
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